ol.commentlist li div.vcard img.avatar {
    width: 40px;
    height: 40px;
    position: relative;
    float: left;
    margin: 4px 6px 0 0;
    padding: 2px;
    border: 1px solid #ddd;
    background: #fff;
    -webkit-transition: .8s;
    -moz-transition: .8s;
    -o-transition: .8s;
    -ms-transition: .8s;
    transition: .8s;
}

    ol.commentlist li div.vcard img.avatar:hover {
        -webkit-transform: rotate(720deg);
        -moz-transform: rotate(720deg);
        -o-transform: rotate(720deg);
        -ms-transform: rotate(720deg);
        transform: rotate(720deg);
        border-radius: 23px;
    }
